Owner s Manual RGL and RBGL 2000 lb lb. Capacity Rail Liftgates

Transcription

1 Phone: Fax: Owner s Manual RGL and RBGL 2000 lb lb. Capacity Rail Liftgates GR02479 Waltco Lift Corp. Waltco Lift Corp. Waltco Lift Inc. Corporate Office United State United States Canada 285 Northeast Ave. 620 S Hambledon Ave. 90 North Queen St. Tallmadge, OH City of Industry, CA Etobicoke, ON M8Z 2C5 P: P: P: F: F: EO:7875 Rev

2 Table of Contents Improper operation and maintenance of this liftgate could result in severe personal injury or death. Read and understand the contents of this manual and all warning and operation decals before operating and/or performing maintenance on this liftgate. Introduction... 3 Safety Information... 4 Warranty... 6 Liftgate Terminology... 7 RGL Operation Instructions RBGL Operation Instructions Preventive Maintenance Placement of Decals Lubrication Instructions Platform Brake Cable Replacement Schematics How to Order Parts Page 2

3 INTRODUCTION If anyone observes improper installation, improper operation, or damage, they should immediately contact a qualified person for assistance and correction. We strongly urge anyone that has any questions or doubts as to the installation, condition, use, operation, maintenance or repair of the liftgate to contact us at Waltco where we have qualified personnel that will be happy to assist you. Telephone numbers and addresses of these locations are listed in the Owner s Manual and Installation Instructions. INSTALLATION Waltco liftgates should only be installed by those with sufficient basic skills to understand the installation and operation of the liftgate, along with the equipment on which the liftgate is being installed. Waltco s installation instructions are not intended to give rationale for all the instructions that are given; however, it is the intent of these instructions to give the installer both the operations and what we believe to be the most desirable sequence of implementing these operations. These instructions can in no way expand into an area where they will replace a qualified person, or clear thinking and a basic knowledge that must be possessed by the installer. It has been our experience that a knowledgeable journeyman following these instructions and observing the operation of the liftgate will have a sufficient comprehension of the liftgate to enable this person to troubleshoot and correct all normal problems that may be encountered. Failure to follow the installation instructions, adjustments and mounting dimensions may result in improper and unsafe operation of the liftgate. Unauthorized alterations of the liftgate can cause an undesirable and dangerous condition. OWNER S MANUAL The Waltco Owner s Manual is intended to act as a guide for operation and routine maintenance but is no way intended to encourage usage or repair of the liftgate by those who are not qualified to do so. The contents of the owner s manual include, but are not limited to general operation instructions, routine lubrication, parts lists, and an outline of things that should be checked but may not be obvious to those not technically qualified. This manual assumes the liftgate is properly installed, undamaged and operates correctly. Improper installation, improper operation, or damage should be immediately corrected by a qualified person. INSPECTION As part of the regular inspection of a liftgate and after damage or suspicion of an overload, inspect for wear or structural damage and make necessary repairs or replacements. Check all structural components and their attachment to the liftgate for cracked welds, loose fasteners, wear and part deformation. Check cylinder and hose for leaks. Inspections and repairs should be made by a qualified mechanic. REPLACEMENT PARTS Use only Waltco original equipment replacement parts. Components of other liftgate manufacturers may outwardly appear to be the same but are not interchangeable with Waltco products. Waltco components are specifically designed for safety requirements, reliability and compatibility with our products. Refer to your Waltco parts manual when ordering parts. NOTE: When ordering, give model and serial number of liftgate. DECALS It is important that every vehicle that has a WALTCO Liftgate have legible DECALS clearly posted on the vehicle and an OWNER S MANUAL in the vehicle at all times as a guide for proper operation and maintenance. Additional DECALS and OWNER S MANUALS can be obtained from WALTCO TRUCK EQUIPMENT COMPANY Rev 02 EO 6156 Page 3

4 Chapter 1 Safety Information WARNING Read, understand, and follow all of the warning listed below. Failure to follow these warning could result in severe personal injury or death. Read and understand the Owner s Manual, all decals and warning on liftgate before operating liftgate. Do not operate liftgate without a thorough knowledge and understanding of the operation of the liftgate. Liftgate hazards can result in crushing or falling. This liftgate is designed for loading and unloading of cargo. If personnel are required to ride liftgate, observe and familiarize yourself with the liftgate operation, decals and manuals. Ensure stable footing at all times. Do not ride liftgate with unstable loads. Wheeled loads must be properly retained from rolling. Tall, high center of gravity loads must be retained from falling over. Never overload liftgate: Load platform as close to the vehicle, and towards the middle of the platform as possible. Refer to owner s manual and capacity decal of liftgate for maximum load and load placement. Keep hands and feet clear of all potential pinch points. Never use liftgate if it makes any unusual noise, has unusual vibration, raises or lowers unevenly, or fails to operate smoothly. Never use liftgate if it shows any signs of structural damage such as cracked welds, bent or distorted members. Do not attempt any repairs unless you are qualified to do so. Care should be taken when work is performed on a disabled liftgate located near moving traffic. When possible the vehicle should be moved away from traffic areas for repair. Precautionary measures should be taken to ensure personal safety including those recommended in Federal Motor Vehicle Safety Standards When welding to liftgate, or liftgate components, take all necessary safety precautions, including using respiratory protection and other pertinent personal protective gear when welding harmful materials. All protective covers, guards, and safety devices must be in place and access doors closed before operating liftgate. Do not allow anyone to stand in, or near area, in which Platform will open and close before opening or closing Platform. Do not allow anyone to stand near the Platform where a falling load could land on them. Platform is always to be properly stored and secured for transit. See the Owner s Manual for details. Take care to retain cargo during transit for liftgate Platforms which function as the tailgate or door of the cargo area. Small objects can fall through the space between the vehicle and the folded Platform. A Lock-Out device or Shut-Off Switch should always be used to prevent unauthorized use of liftgate. For liftgates with Runners, never use liftgate if Runners do not travel freely and smoothly. For liftgates with Roller Lifting Chain, the Chain should be replaced every (5) five years or 15,000 cycles, whichever comes first. Replace only with Waltco approved Roller Chain. Never transfer loads which exceed lifting capacity on or over any part of the Platform unless the liftgate is equipped with a special reinforced Platform and Platform Support Bars for use when the Platform is used as loading ramp (dock board). Refer to the Using Platform as a loading ramp Chapter in the Operation Instructions of the BZ/RZ series Owner s Manual. For liftgates equipped with Trailer Hitches, never exceed the rated capacity of the hitch. Do not exceed the vehicle s weight rating. Refer to the vehicle s Owner s Manual. Vehicle must comply with all state and federal standards. Follow the Maintenance Guide chapter in the Owner s Manual. Page Rev 04 EO 6309JJ

5 Chapter 1 Safety Information Liftgates with Tilt Function Proper use of the Control Switches is of extreme importance. Improper use of Tilt Switch could cause load to fall from the Platform or damage the liftgate. Platform should be in a generally horizontal position when raising or lowering with a load. In any tilt position, the Platform may vary from level while raising or lowering the Platform. Liftgates equipped with spring operated Cam Closer Replace Cam Release Spring every five (5) years or 15,000 cycles, whichever comes first. RGL-Series Liftgates Make certain Platform Brake mechanisms are operating properly. The Runners are always to remain powered up against the Upstops Pins when in transit. Inspect Cables every three (3) months or 750 cycles, whichever comes first. Cables must be replaced if they show signs of wear, distortion, kinking or if any broken wires are visible Replace cables every five (5) years or 10,000 cycles, whichever comes first. This is the safety alert symbol. This manual uses this symbol to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid personal injury or death. SIGNAL WORDS WARNING Indicates a potentially hazardous situation, which if not avoided, could result in death or serious injury. Black letters on an orange background CAUTION Indicates a potentially hazardous situation, which if not avoided, may result in minor or moderate injury. May also be used to alert against unsafe practices. Black letters on a yellow background. NOTICE Indicates a potentially hazardous situation, which if not avoided, may result in property damage. WARNING CAUTION NOTICE Page Rev 04 EO 6309JJ

6 WALTCO warrants its products free of defects in materials and workmanship. WALTCO will replace components found defective during the warranty period. Labor will be reimbursed according to our flat rate labor schedule at the prevailing shop rate. Contact our Sales or Warranty departments for the warranty period of your model or for information regarding our flat rate labor schedule. WALTCO Warranty Claim Procedure For consideration, all claims must be received within 30 days of repair and include the following information: Liftgate Serial Number Description of problem and corrective actions Itemization of the labor charge to include the number of hours and labor rate Replacement warranty parts can be obtained by contacting Waltco s Parts Department. Parts must be returned for inspection when requested. Exclusions: Waltco s warranty does not include reimbursement for service calls, vehicle rental, towing, travel time, fabrication of parts available from WALTCO, damage from misuse or abuse, negligence, accidents, alteration, loss of income or overtime expense, oil, or normal wear. Diagnosis and troubleshooting time are included in the flat rate labor times. Warranty and technical information is available from WALTCO s toll free customer service lines from 8:00 a.m. to 5:00 p.m. EST. Waltco Lift Corp 285 Northeast Ave, Box 354, Tallmadge, OH , Please visit our websites: or We're behind you all the way! EO:7714 Rev Page 6

7 Chapter 2 1. Hydraulic Unit 2. Breather 3. Hydraulic Enclosure 4. Hydraulic Reservoir 5. Liftgate Wiring Harness 6. Opening Solenoid Valve Liftgate Terminology 7. Lowering Solenoid Valve 8. Raise / Close Solenoid Valve 9. Toggle Switch (Dual Pump Only) 10. Relay 11. Motor Wiring Harness 12. Starter Solenoid GR02015 Page 7

8 Chapter 2 Liftgate Terminology 13. Curb Side Rail 14. Control Switches 15. Safety Chain Assembly 16. Upstop Pin 17. Pulley Assembly 18. Pulley Guard Assembly 19. Brake Assembly 20. Upper Roller / Tandem Assembly 21. Drivers Side Rail 22. H-Frame Hose Guide 23. Lift Cylinder 24. Flow Control Valve 25. Crossbeam Access Cover 26. Hydraulic Hose 27. Runner Hose Guide 28. Torsion Bar Anchor 29. Slide Bearing 30. Curb Side Runner Assembly 31. Closure Cylinder 32. Chain Clip 33. Deck Assembly 34. Torsion Bar 35. Deck Extension Assembly 36. Drivers Side Runner Assembly 37. Upper Link Assembly 38. Connecting Bar Assembly 39. Lower Link Assembly 40. Curb Side Cable Assembly (Fixed) 41. Pulley Assembly 42. Drivers Side Cable Assembly (Adjustable) 43. Shoe Assembly 44. Specification Tag GR02278 Page 8

9 Chapter 2 Liftgate Terminology Explanation of Specification Tag Model Name Description Capacity RBGL30 Rail Lift, Bottle Gas 3000 lbs. RBGL40 Rail Lift, Bottle Gas 4000 lbs. RGL20 Rail Lift (96" WIDE) 2000 lbs. RGL30 Rail Lift (96" WIDE) 3000 lbs. RGL40 Rail Lift (96" WIDE) 4000 lbs. RGL50 Rail Lift (96" WIDE) 5000 lbs. RGL60 Rail Lift (96" WIDE) 6000 lbs. RGL20 Rail Lift (102" WIDE) 2000 lbs. RGL30 Rail Lift (102" WIDE) 3000 lbs. RGL40 Rail Lift (102" WIDE) 4000 lbs. RGL50 Rail Lift (102" WIDE) 5000 lbs. RGL60 Rail Lift (102" WIDE) 6000 lbs. GR00241 Specification Tag NOTE: Tag located on Curb Side Rail above switches. GR02279

10 Chapter 3 Operation Instructions OPERATION INSTRUCTIONS Read and understand these instructions, all warning and operation decals, and this manual before operating this liftgate. Platform and Runners are always to be powered up against Upstop Pins when in transit. Both safety chains must be used when liftgate is not in use. A padlock may be used to prevent unauthorized use of liftgate. Never remove Safety Chains from Platform if chains are in tension. Apply up power and closing power as required to release tension on the chains. When in transit Platform must be in stored position with Safety Chains hooked securely. Do not allow anyone to stand in, or near area, in which Platform will open and close before opening or closing Platform. Do not allow anyone to stand near the Platform where a falling load could land on them. Platform Side Bar Linkage areas must be kept clear for Platform opening and closing. Certain conditions may cause Platform Brake(s) to engage even if cable has not broken. In this case, raise Platform first then lower Platform. Inside Control Switch Primary Controls Safety Chain Make sure all protective covers and guards are properly in place at all times. Pulley Guards (2) DO NOT operate liftgate unless Pulley Guards and Access Cover are installed and secured. Access Cover GR02479 Page 10

11 Chapter 3 Operation Instructions LOADING OF PLATFORM Load and unload from rear of platform and not side of platform. Never remove side linkage to load or unload platform. Always load as close to center of platform and as close to truck sill as possible. Never operate lift trucks on or over any part of platform. This unit is intended for loading and unloaded of cargo only. Do not use for anything but its intended use. TO RAISE AND LOWER PLATFORM IN DOCK LOADING POSITION Unhook Safety Chains from Platform Press DOWN to lower Platform Press UP Switch to raise Platform TO OPEN PLATFORM TO LOADING POSITION Unhook Safety Chains from Platform Push the DOWN toggle switch and the OPEN toggle switch simultaneously to power open the platform TO RAISE/LOWER PLATFORM IN LOADING POSITION Press UP Switch to raise Platform Press DOWN Switch to lower Platform

12 Chapter 3 Operation Instructions TO CLOSE PLATFORM TO TRANSIT POSITION Press UP Switch to raise Platform at least 12 from ground Push the UP toggle switch and the CLOSE toggle switch simultaneously to power close the platform Press UP Switch to raise folded Platform Hook both Latch Chains to Platform PROPER HOOKING OF SAFETY CHAIN Properly hook latch chain as shown. Correct hooking of S Hook Incorrect hooking of S Hook The safety chains provided with your liftgate are an important safety device and should always be in place when liftgate is not in use. To prevent unauthorized persons from using liftgate, a padlock may be used in place of S Hook. Always use chains on both sides of liftgate when not in use. Pad Lock GR02474 PROPER USE OF FOLDING RAMP NOTE: Folding ramps to be folded and latched in place when liftgate is closed in the transit position. RAIS LOWE OPE CLOS GR02483 Page 12

13 Chapter 3 Operation Instructions FOLDING RAMP OPERATION INSTRUCTIONS Unlatch ramp and unfold to loading position. Use cables for retention ramp application. Assure ramp is latched when in transit position. Ramp Latch GR01553 CART STOP OPERATION INSTRUCTIONS Push lever away from platform to release stop bar. Rotate stop bar to lock in vertical position. Rotate brace to engage stop bar. Stop Bar Lever Lock Lever Stop Bar Brace GR01552 Page 13

14 Chapter 3 Operation Instructions DUAL PUMP OPERATION INSTRUCTIONS The purpose of an optional Dual Pump unit is to provide a backup in the event of a malfunction of the Primary Pump or the switches on the column of the liftgate. The Auxiliary Pump is NOT INTENDED FOR NORMAL OPERATION of the liftgate. Liftgate must be repaired as soon as possible after a malfunction of the Primary Pump unit occurs. The Auxiliary Pump unit is operated with the Hand Held Remote Control located in the Hydraulic Enclosure. TO OPERATE THE PRIMARY PUMP: Move toggle switch on the pump to the Primary Position. Operate liftgate with controls on columns as usual. TO OPERATE THE AUXILIARY PUMP: Move toggle switch on the pump to the Auxiliary Position. Operate liftgate with Hand Held Remote Control. Toggle Switch GR02135 AUXILIARY HAND HELD REMOTE CONTROL: Auxiliary Pump Hand held remote operates in the same manner as the outside Main Control Switches. Raise Button Use the center switch in conjunction with the Raise or Lower switches to close or open platform. Open / Close Button Lower Button GR02043 Page 14

15 Chapter 3 Operation Instructions OPERATION OF MANUAL OVERRIDE VALVES TO LOWER AND UNFOLD PLATFORM IN EVENT PUMP ISN T FUNCTIONING: A Do not allow anyone to stand in, or near area, in which Platform will open and/or lower. Use valve (A) to open platform. Then valve (B) to lower platform to ground. B GR01987 HAND PUMP OPERATION INSTRUCTIONS: Hand Pump option is to provide a backup in the event of a malfunction of the batteries, pump unit or controls. The Hand Pump is NOT INTENDED FOR NORMAL OPERATION of the liftgate. Liftgate must be repaired as soon as possible after a malfunction occurs. A B Make certain Manual Override Valves (A & B) are closed. Raise platform to bed level with Hand Pump. Make certain platform surface is clear of all objects. Continue to pump until platform is closed. Do not over pressurize hydraulic system. Once platform is closed, stop pumping. Install Safety Chains. GR02484 Page 15

16 Chapter 4 RBGL Operation Instructions RBGL SERIES OPERATION INSTRUCTIONS The RBGL is specifically designed for handling tall loads such as cylinder gas bottles. Securing loads can be accomplished by using the chains. After placing a load in position, fasten chain snugly around load to Chain Hook on Runner. Chain Chain Hook After use, chains are hooked to Guard Rail and ramp is folded onto the platform skin for transit. Chain in transit position GR FOLDING RAMP USED AS CART STOP Folding Ramp may be used as a retaining device to prevent carts and similar devices from rolling off platform. Folding Ramp Latch GR02487 Page 16

17 Chapter 4 RBGL Operation Instructions RBGL WITH FIXED RAILS IN DOCK LOADING POSITION. When dock loading, ramp is to be folded down onto platform skin before raising platform to closed position. GR02488 RBGL WITH FOLD DOWN RAILS (optional) Fold Down Rails can be folded down out of the way to increase available opening width when dock loading. GR02489 Page 17

18 Chapter 5 Preventive Maintenance Waltco recommends that the RGL-Series liftgate be inspected at recommended intervals listed below to help assure proper function and operation of the liftgate. Note: Photocopy the following PM Checklist to help keep track of periodic maintenance on the liftgate. Keep completed form with maintenance records. For more detailed instructions on the following checklist items, refer to the appropriate sections in this Owner s Manual. DO NOT CONTINUE TO USE LIFTGATE IF ANY POINTS OF INSPECTION LISTED BELOW, MAY CAUSE YOU TO THINK THE LIFTGATE IS UNSAFE. REPAIR IMMEDIATELY. If liftgate is found to be in need of repair or adjustment not covered in this manual, contact your nearest Waltco Distributor. WALTCO RGL/RBGL-SERIES LIFTGATE PREVENTIVE MAINTENANCE CHECKLIST PM Interval: As listed below Date: Vehicle No. Mechanic: Liftgate S/N: Model: Check appropriate box below for each step: Weekly PM Procedures 1 OK Repair Required Corrected Check platform brake (weekly procedures). Monthly PM Procedures 2 OK Repair Required Corrected Check liftgate operates freely and smoothly throughout entire operation. 3 OK Repair Required Corrected Check platform brake (monthly procedures). 4 OK Repair Required Corrected Check for apparent damage to the lifting structure, such as bent or distorted members or cracked welds. 5 OK Repair Required Corrected Check that all pins, bolts and fasteners are tight and secure. 6 OK Repair Required Corrected Check for worn or damaged bearings, pulleys, rollers, all pivot points. 7 OK Repair Required Corrected Check safety chains and hooks. 8 OK Repair Required Corrected Check that controls operate properly. 9 OK Repair Required Corrected Check operating speeds. 10 OK Repair Required Corrected Check for hydraulic leaks in hydraulic cylinder(s), hoses, fittings, and valves. 11 OK Repair Required Corrected Check all battery cables and connections (both positive and ground cables) to be sure they are tight and free of corrosion. 12 OK Repair Required Corrected Check oil level in reservoir. 13 OK Repair Required Corrected Check that all decals are in place and legible. 14 OK Repair Required Corrected Lubricate the liftgate per the Lubrication Instructions. 3 Month PM Procedures (Includes steps 2-14 above) 15 OK Repair Required Corrected Check entire length of both lifting cables. Replace cables every 5 years or 10,000 cycles whichever comes first. Semi Annual PM Procedures (Includes steps 2-15 above) 16 OK Repair Required Corrected Check motor brushes, clean motor housing and change oil. Page 18

19 Chapter 5 Preventive Maintenance WEEKLY INSPECTION Platform Brake Lower opened platform to within a few inches of the ground. Place a 4 X 4 or similar block under the Platform Side Tube at main Platform Pivot. Runner Lower opposite side of platform to the ground so that platform is resting at an angle. While raising platform with raise switch, listen for a click near top of Runner. If no click is heard, try again. If still no click, the Monthly Inspection must be conducted. Repeat above test for opposite Runner. Do not use liftgate if Platform Brake is not functioning properly. Have liftgate serviced immediately. MONTHLY INSPECTION 1. Check that liftgate operates freely and smoothly throughout its entire operating cycle and there are no unusual noises. 2. Check that platform is level when raised to bed height. 3. Perform the following steps to test Platform Brake mechanism: Lower open platform to within a few inches of ground. Place a suitable hydraulic or scissor type jack under Platform Side Tube at main Platform Hinge. Jack Platform and Runner up approximately 3 relative to Rail. Lower jack. If Platform and Runner remain in the raised position then Platform Brake is operational. Push Raise Switch to raise entire platform several inches above test position and Platform Brake should disengage. Lower platform and repeat for the opposite side Platform Brake. Do not use liftgate if Platform Brake is not functioning properly. Have liftgate serviced immediately. Platform Side Tube Main Pivot Hinge Platform Side Tube GR02490 Runner Main Platform Hinge Jack GR02491 Page 19

20 Chapter 5 Preventive Maintenance 4. Inspect entire length of both Cables. Replace if necessary. Entire length of both Cables must be inspected a minimum of every three (3) months or 750 cycles, whichever comes first. Cables must be replaced if they show any signs of wear, kinking, corrosion, distortion, or if any broken cable wires are visable. Cables must be replaced every five (5) years or 10,000 cycles, whichever comes first. Any time Cables are replaced, all Pulley Bolts and lock washers must also be replaced. Waltco provides kits for Cable/Pulley Bolt replacement. During Cable and Pulley Bolt replacement, also inspect the Pulleys and Pulley Bearings. If any components are worn or otherwise deteriorated they must be replaced. If bearings do not rotate freely, they are to be replaced. Pulley Assembly Fixed Cable Adjustable Cable Pulley Guard Pulley Assembly GR Check for apparent damage to liftgate, such as bent or distorted members and/or any cracked welds, which may have resulted from overloading or abuse. 6. Check for any excessive wear in the Cable Pulleys, Bearings and Rollers, Platform Linkage and Pins, 7. Closer Mechanism, Pulley Bolts, and all pivot points. 8. Check that all nuts and bolts are in place and properly tightened. 9. Check that all Pivot and Stop Pins are in place and retained by their proper fasteners. 10. Check that all control switches operate properly. 11. Check the Platform opening and closing speed. The Platform must open and close smoothly and at a safe and reasonable rate of speed subject to the environment in which it will be operated. 12. On platforms with Side Linkage, inspect the Torsion Bars with the platform in loading position at bed level. If any Torsion Bars are broken they must be replaced. DO NOT get under Platform to inspect Torsion Bars. Torsion Bars Torsion Springs 13. On platforms without side linkage, inspect Torsion Springs visually with Platform in stored position. If any Torsion Springs are broken they must be replaced. GR02497 Page 20

21 Chapter 5 Preventive Maintenance 14. Inspect entire length of Closer Cylinder Hose for signs 15. of wear, abrasion, or leakage. Hose should flex easily throughout operating cycle with no binding. 16. Check Hose Guides for bends or damage. 17. Check for oil leaks in hydraulic Lift Cylinder, hydraulic Closer Cylinder, and all hydraulic hoses and fittings. Replace any hose that show any sign of excessive abrasion of the covering. Tighten or replace any hydraulic component as required to stop oil leakage. 18. Check level of oil in liftgate hydraulic Reservoir with the Platform at ground level. The oil should be within 1/2" of top of Reservoir. 19. Lubricate the liftgate by following the Lubrication Instructions chapter in this manual. 20. Check the electrolyte level of vehicle battery. Fill as required per manufacturer recommendation. 21. Examine all Warning, Capacity, and Operation decals. If any decals are illegible and need to be replaced, decals can be obtained free of charge from Waltco. If liftgate is found to be in need of repair or adjustment not covered in this manual, contact your nearest Waltco distributor. H-Frame Hose Guide Closer Hose Curb Side Runner Hose Guide GR02493 CHECK BATTERIES Check electrolyte level of batteries. Check that all wiring and battery cable connections are tight and free of corrosion. All electrical connections are to be coated with dielectric grease. GR01471B CHECK OIL LEVEL Lower platform to ground in open position. Fill hydraulic reservoir to within 1/2" of top of reservoir. Filler Plug GR02135 Page 21

22 Chapter 5 Preventive Maintenance Recommended Fluids Fill reservoir Temperature Range Acceptable Fluids Fill with recommended fluid or equivalent. 0 to 120 F Waltco Biodegradable Fill the reservoir to within 1/2 from the top. Liftlube TM part # Fluids are available from the Waltco parts Shell Tellus S2 V 32 Dept Chevron Rando HDZ to 90 F Waltco Biodegradable LiftLube Arctic part NOTE: # Do not use the following fluids: Waltco All Season Hyd Oil Brake Fluid Part Power steering fluid Shell Tellus S2 V 15 Automatic Transmission Fluid (ATF) Mobil DTE 10 Excell 15 A good quality SAE 10W motor oil may also be used in temperatures above 32 F. Rev 06 SEMI ANNUAL INSPECTION 1. Perform procedures outlined in Monthly Inspection 2. Inspect pump unit motor: Disconnect battery cables. Remove motor end cover. Examine armature brushes for wear. Motor should be replaced if brushes are less than 1/8" long. Clean out all residue from inside motor housing Apply several drops of light weight machine oil to armature shaft bearing in motor end cover and reassemble motor end cover. If oil is dirty, drain oil from hydraulic system and flush entire system. To replace Hydraulic Fluid: Open platform and lower to ground. Drain oil from hydraulic system using drain port located on bottom of reservoir and flush entire system. Fill reservoir to within 1/2 of top of reservoir Reservoir Motor GR02135 Page 22

23 Chapter 5 Preventive Maintenance PLATFORM ADJUSTMENT If platform is not level with floor of vehicle check that both up-stop pins are properly secured in place. If not, up-stop pins must be re-installed properly. If platform is still not level proceed to next step. Up-stop Pin GR02494 Unfold and raise platform to bed level and measure how uneven platform is in relationship to vehicle floor. This will be your X dimension. Lower platform to ground. Remove access cover from crossbeam box. Street Side Top of Platform Vehicle Bed X Curb Side GR02495 Loosen locknut. If curb side of platform is lower than street side, adjust cable to the right by turning the adjusting nut counterclockwise from cable end. If street side of platform is lower than curb side, adjust cable to the left by tuning the adjusting nut clockwise from cable end. Adjust cable the same distance as X as measured above. Tighten locknut. Make certain adjusting nut is fully threaded on cable end and tightened. Lock Washer Cable End not to be below surface of nut Adjustable Cable End RIGHT Reinstall access cover. WRONG GR02496 Page 23

24 Chapter 6 Placement of Decals All decals must be in place and legible or all warranties are void. All decals must be in place and legible or all warranties are void. ITEM DECAL QTY PART NO. LOCATION 1 Safety Instructions Operation lb Capacity Decal lb Capacity Decal lb Capacity Decal lb Capacity Decal lb Capacity Decal Circuit Breaker Decal Hazard Decal Locate in a conspicuous place near controls. If your liftgate is equipped with dual controls, an additional Safety Instruction decal ( ) is to be placed in a conspicuous place near the second set of the controls. Caution Stand Clear Locate one in a conspicuous place near controls. 2 Caution Stand Clear Locate near liftgate on street side of vehicle. 3 Caution Decal Important Decal Caution Decal Caution Stand Clear Locate near top of each rail, not on pulley covers themselves, so can be read when removing pulley covers. Locate one each in a conspicuous place near upper and lower pulley bolts, main cylinder bolts, shoe assembly bolts, and upper and lower cylinder bolts. Locate one on shoe assembly and one on bottom of crossbeam box, under cylinder. Locate on back (bottom) side of platform or ramp so as to be visible when liftgate is in stored position. Used on liftgates equipped with single section platform or with folding ramp. 7 Safety Chain Decal Locate at base of both runners. 8 Important Decal Warning Decal Selector Switch Decal, Single Pump Only Selector Switch Decal, Dual Pump Only Dual Pump Decal Hand Pump Decal Single Pump Decal Dual Pump Decal Conspicuity Tape Locate on lower curb side linkage. Used on liftgates equipped with a folding ramp. Locate next to circuit breaker. If more than one circuit breaker is used; decal must be in both locations. Locate appropriate decal on pump unit selector switch bracket. Locate decal inside hydraulic enclosure cover for all dual pumps. Locate decal inside hydraulic enclosure cover for liftgates with Auxiliary Hand Pump Option. Locate decal inside hydraulic enclosure cover for all single pumps. Locate decal inside hydraulic enclosure cover for all dual pumps. Locate on back (bottom) side of platform or ramp so as to be visible when liftgate is in stored position. Page 24

25 Chapter 6 Placement of Decals To maximize decal adhesion to surfaces: Surface must be dry and clean Firm pressure must be applied to decal Minimum surface temperature 65º Heat gun may be used to heat surface GR02475 Page 25

26 Chapter 7 Lubrication Instructions The liftgate should be lubricated every 120 days. #1 Grease with automotive type chassis grease with platform resting on ground. #2 and #3 Oil with WD-40 or equivalent. #1 Lubricate with chassis grease: Under shoe assembly Using a rag, lightly lubricate outside faces of rails with light chassis grease if required for smooth operation. Lubricate only areas where bearings slide on rails. Do not operate liftgate if any guards or access covers are not in place and properly secured. #2 Lubricate with WD-40 or equivalent: Platform Linkage which includes Torsion Bar Anchors, and Springs on one-piece platforms. NOTE: Take care not to nick or scratch exposed cylinder shaft as this could cause cylinder leakage. #3 With Platform at bed level, use WD-40 or equivalent to lubricate two areas of both Platform Brake Mechanisms. A. Spray inside Lifting Cable Yoke end where it attaches to Runner Assembly. B. Spray generously with a circular motion inside lubrication holes on both sides of each rail. Cable Yoke End GR02476 Pulley covers not shown for clarity. Pulley covers MUST be in place at all times during operation of liftgate. A Use only WD-40 or equivalent light spray lubricant to lubricate Platform Brakes. DO NOT use grease or heavy oil that may tend to build up and become gummy. Rail Runner NOTE: Cables, Roller Bearings, and Pulley Bearings do not require lubrication. While cables do not require lubrication, if cables have ever been lubricated it is recommend they continue to be lubricated. B Spray in lubrication holes on both sides of each rail GR02477 Page 26

27 Chapter 8 Platform Brake PLATFORM BRAKE This liftgate is equipped with a platform brake system, designed to prevent the platform from falling in the event a lifting cable breaks. These platform brakes must never be used as a substitute for timely inspection and replacement of cables. Certain conditions and/or circumstances may prevent platform brakes from functioning consistently. These platform brakes are not intended to and must not take the place of proper cable maintenance. Lifting cables must always be inspected and replaced as described in this owner s manual. In the event a cable does break, do not move vehicle with a load on platform. Platform must be unloaded and secured for transit before vehicle is moved. Connector Plate Springs Toothed Cam Lifting Cable Runner Cam Pivot Pin GR02498 DECSRIPTION AND FUNCTION OF PLATFORM BRAKE The platform brake system consists of two independent brake mechanisms located at the upper portion of the runner assemblies (inside the rails). Each platform brake assembly has a toothed cam. This cam is joined by a spring and connector plate to lifting cable. If cable is pulled taut, the cam pivots away from the rail and runner is free to travel up and down the rail. Should a cable break, spring tension (lower spring) pivots the cam so teeth contact the inside of rail, causing runner to lock at that position. Under certain conditions, one or both platform brakes may engage (even if a cable has not broken), thus not allowing platform to lower or allowing only one side to lower. If this happens and a cable has not broken, platform brake(s) can be disengaged by raising platform to bed level and slightly powering up against upstop pins. NOTE: Never allow platform to lower unevenly. Locked (braked) position Normal operating position Rail Cam Pivot Pin To Connector Plate and Cable Lower Spring GR02499 Page 27

28 Chapter 9 Cable Replacement CABLE REPLACEMENT Do not move vehicle with a load on platform. Platform must be unloaded and secured for transit before vehicle is moved. It is very important that both cables be replaced at the same time. Upper Bearing Assembly Remove these bolts Any time cables are replaced, remove platform brake assembly for thorough cleaning and inspection. In addition, all pulley bolts and lock washers must also be replaced. Follow these procedures for replacing cables; if you are performing a periodic replacement of cables then skip to step 3. Runner 1. If a cable is broken, carefully unload platform. Use a forklift to support runner (side with broken cable). Only then remove upper bearing assembly mount bolts from runner (with broken cable). Position Fork under Runner Be sure to use safety precautions to avoid injuries. GR Lower platform slowly to ground by using one person to push Lower Switch and another to lower side of platform with forklift. NOTE: Be careful during this operation to prevent any damage to liftgate. Flat Washer Pulley Bolt Lock Washer Nut Pulley Upper Pulley Cover Guard 3. Make certain platform is on ground. If bolts have not been removed from upper bearing assembly do so at this time. 4. Remove pulley cover guards, upstop pins and upper pulleys from top of both rails. 5. Lift upper bearing/brake assemblies out of rails by the cable. Upstop Pin Cable may have broken wires sticking out using leather gloves is recommended. NOTE: Bearing/Brake assembly should be pulled out by the Cable. If unable to do so, insert a screwdriver between Cable Anchor and Upper Bearing/Brake Mount Plate. This will release Brake so Bearing Assembly can be pulled out of Rail. Coiled Pins Insert a screwdriver or similar tool and wedge cable end up to disengage brake GR02244 Page 28

29 Chapter 9 Cable Replacement 6. Remove old cables from liftgate, making note of how cables are routed. Install new cables. NOTE: Use proper cables. Cables used on liftgates with Brakes must have 2-5/8 deep end slots as shown. 7. Platform brakes should be inspected cleaned and lubricated at this time (see below). 8. Attach yoke end of new cable to brake assemblies. 9. Use a screwdriver, if required, to lower bearing/brake assembly down into rail (see previous page). NOTE: Special care must be observed when attaching Cable End to platform Brake Mechanism so use proper parts as shown. 10. Reinstall upper pulleys, upstop pins and pulley cover guards (ref previous page). 11. Line up holes in bearing/brake assembly with mount holes in top of runner and install bolts, nuts and lock washers. 12. Double check that all nuts, bolts, washers, and coiled pins are in place and properly secured. 13. Adjust cables to level out platform per instructions in this manual. 14. Test operation of each platform brake assembly as outlined in the Maintenance Guide in this manual. 1-1/4 Shoulder 1/2" X 1-1/4 w/3/8-16 Socket Head Shoulder Screw Lifting Cable 3/8-16 Locknut 2-5/8 Deep slot Bearing / Brake Assembly GR02245 INSPECTION OF PLATFORM BRAKES Examine platform brake assembly for loose pins, bent or damaged parts, etc. Replace any damaged components. Make certain all parts including cam moves freely without binding which may be caused by corrosion, bent pins, etc. Be certain springs are not corroded, bent or broken. Replace if necessary. Examine toothed cam for chipped, broken or dulled teeth. Replace if signs of damage. Clean any grease, dirt, etc. from teeth of cam. Lubricate areas shown with WD-40 or similar light spray lubricant. Cam Spring Pin* Upper Spring (larger) Lower Spring (smaller) Connector Plate Toothed Cam Roller Cam Pivot Pin (welded in place) Lower Spring Pin (welded place) GR02500 Page 29

30 Ch. 10 SCHEMATICS SINGLE PUMP ELECTRICAL SCHEMATIC GR02304 Page 30

31 Ch. 10 SCHEMATICS SINGLE PUMP HYDRAULIC SCHEMATIC GR02305 Page 31

32 Ch. 10 SCHEMATICS SINGLE PUMP WITH HAND PUMP HYDRAULIC SCHEMATIC GR02307 Page 32

33 Ch. 10 SCHEMATICS DUAL PUMP ELECTRICAL SCHEMATIC GR02308 Page 33

34 Ch. 10 SCHEMATICS DUAL PUMP HYDRAULIC SCHEMATIC GR02309 Page 34

35 How To Order Parts Repairs should be made only by authorized mechanics using WALTCO Replacement parts. When ordering repair or replacement parts, please include all the information asked for below. If this information is not available, a complete written description or sketch of the required part will help WALTCO identify and deliver the needed part to you. THE FOLLOWING INFORMATION MUST BE INCLUDED: 1. SERIAL NUMBER - [WALTCO liftgate serial numbers can be found on the Specification Tag attached to the mount frame. (On older units the Specification Tag is located on the side or bottom of the platform.)] 2. MODEL NUMBER - [Or capacity] 3. PLATFORM SIZE THEN INCLUDE THE FOLLOWING INFORMATION: 4. PART NUMBERS 5. DESCRIPTION 6. QUANTITY REQUIRED MAIL, OR PHONE YOUR REQUEST TO: Waltco Truck Equipment Co. 285 Northeast Avenue Tallmadge, OH FAX: parts@waltco.com ALL PARTS ARE F.O.B. FROM THE SHIPPING FACTORY PLEASE NOTE: To assure you of continuing and effective quality control, our warranty policy permits replacement of hydraulic cylinders, valves and motor pump units when their factory seals are intact. Parts under warranty will be exchanged promptly after careful inspection of the returned assemblies EO 5534A Rev 02 Page 35

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37 Every vehicle that has a WALTCO Liftgate must have legible WARNING AND OPERATION DECALS clearly posted on the vehicle and an OWNER S MANUAL in the vehicle at all times as a guide for proper operation and maintenance. Additional WARNING DECALS, OPERATION DECALS and OWNER S MANUALS can be obtained from WALTCO TRUCK EQUIPMENT COMPANY. NOTE: When ordering, give model and serial number of the liftgate. Page 37

38 IMPORTANT KEEP THIS OWNER S MANUAL IN THE VEHICLE WARNING Improper operation and maintenance of this liftgate could result in severe personal injury or death. Read and understand the contents of this manual and all warning and operation decals before operating and/or performing maintenance on this liftgate. For SAFETY information on this liftgate see Chapter 1 of this manual EO6156 Rev 01 Page 38